The Siemens SENTRON 3VA2463-7HN32-0AH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection — not a motor-protective device or a feeder-tie switch. Its primary job is to clear faults on distribution feeders and branch circuits in commercial and industrial switchboards, panelboards, and MCC buckets. Rated 630 A continuous at 40 °C ambient, with a temperature derating curve that drops to 520 A at 70 °C. That 630 A figure is the one you size busbars and upstream protection for; the 520 A floor at 70 °C tells you how much headroom you lose in a hot enclosure. Maximum power loss of 162 W means this breaker dumps heat into the panel — account for ventilation if the enclosure is sealed. Breaking capacity is 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 9 kA at 690 V. That 330 kA figure at 240 V is extreme — it safely interrupts faults in high-available-fault-current installations like large transformer secondaries or generator paralleling gear. The 9 kA at 690 V is the weak point; verify the available fault current at the point of installation if the system is 690 V. Physical footprint: 110 mm deep, 138 mm wide, 248 mm tall. Fits standard 600 mm-wide MCC buckets and panelboard gutters without clearance issues. The trip indicator provides a visual flag when the breaker has tripped on fault — no need to open the enclosure door to check status.
Integration Notes
Designed as a line-protection MCCB in the SENTRON family — mounts in standard panelboard or MCC bucket cutouts. The 3-pole form factor with no undervoltage release and no ground-fault monitoring means it is a straight thermal-magnetic or electronic-trip breaker for basic feeder protection. Auxiliary switch configuration is 2 auxiliary switches plus 1 trip alarm switch (HQ type) — wired for remote status and trip indication. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage limit governs handling and warehousing — the part can sit in a cold warehouse at -40 °C, but must be at -25 °C or above before energizing.